Improvement in pumps



INVENTOL:

www W' Pump.

Patented May 21,1878.

J. S. BEAL.

UNITED STATES PATENT OEEIoE.

JAMES S. BEAL, OF POLAND, MAINE.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 203,814, dated May 2l,1878; application filed February 16, 1878.

To all whom it may concern:

Be it known that I, JAMES S. BEAL, of Poland, in the county ofAndroscoggin and State of Maine, have invented certain new and usefulImprovements in Pumps; and I do hereby declare that the following is afull, clear, and exact description thereof, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawing, and to letters ofreference marked thereon, which form a part of this specification.

Figure 1 is a side sectional elevation of the piston. Fig. 2 is asectional elevation of the pump. Y

Same letters show like parts.

My invention relates to certain improvements in pumps. The kind of pumpto which my improvements relate` is one wherein the water is firstraised a certain height by suction or atmospheric pressure, and thenforced or lifted to the farther height desired.

a is the piston, having the two parts c d, in each of which is a valve.The valve in d-the upperpart-opens upwardly. The valve in cthe lowerpartopens downwardly. Extending from one to the other of these twovalves is the spring e. This spring secures the prompt action or closingof the valves when opened. Their prompt closing is essential to theexact action of the pump.

When the piston a rises the ripper valve in the same is closed, and thusdelivers and forces out the water through the upper of the two openingsor outlets z' j. The spring, extending from one to the other of the twopistonvalves, aids in the prompt shutting of this valveas the pistonrises. The same cause operates in like manner in combination with thelower of the two openings t j when the piston descends.

The valve inthe part d is to admit the water up through and over thepart el, and then by promptly closing insure the delivery of the waterthrough the upper of the two outlets 11j. The valve in the part c isboth to admit of the flow of the water up through it, and by closing atthe time of the descent of the piston to aid in forcing the water outthrough the lower one of the two outlets z j. The two parts of thepiston thus act, in combination with the piston and the two outlets @Ij, to promote the ilow of the water alternately, rst through one andthen the other of the said two outlets.

The springs in the four valves named secure improved promptitude ofaction.

f shows the barrel of the pump in which the piston a works. This barrelhas the aperture g communicating with the feed-pipe l1., through both ofwhich the water flows and enters into the barrel. The barrel has the twohorizontal outlets t' j, each provided with a valve opening outwardly,as illustrated in the drawing. These valves each have springs, whoseoperation is to instantly close the valves when the force or pressurethat opens them has ceased. The springs are represented at la la. One ofthese valved openings is at or near the top and the other at the bottom,at one side of the barrel f. These openings lead into the pipe Z, whichconducts to the spout or outlet of the pump. The top of the barrel iscovered by the metal cap m.

In double-acting pumps of the kind to which my invention relatesdifficulty is experienced from the lack of a prompt closing of thevalves, in order to hold the water which rises by the action of theatmospheric pressure after a stroke of the pump.' As a result of thiswant of prompt action, a portion of the water falls or returns, andlthus impedes the effective as well as easy action of the pump.

My invention, so far as it embraces the spring-valves, aims to obviatethis difculty and defect.

-It is obvious that the springs described and shown in the drawing willaccelerate the valveaction, and thus prevent any return of the waterraised in the pump.

The operation is as follows: When the piston rises in the barrel thewater is forced up through the feed-tube h and into the space left openby the ascent of the piston. The descent of the piston then forces thewater through the valve-opening j into the pipe l, and through it out ofthe spout. The descent of the piston and its succeeding upstrokeoperates in the same way the valve-opening t', and throws another volumeof water into the pipe l. After each of these operations the valves, andespecially the valves in the openings z' and j,'close promptly, owing tothe operation of their springs, and thus secure a thorough action or thepiston having the two valves.

What I claim, and desire to secure by Letters Patent, is-

.Thecombination of the feedpipe h, barrel f, pipe l, arranged asdescribed, with the horizontal openings-ij, having valves, with springsk k, and piston a, having the upper and lower Valves and spring e, andproper feed-apertures in said barrelf, as herein set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two Witnesses.

JAMES S. BEAL.

Witnesses:

L. A. BEAL, I. W. HANsoN.

